JPH08301569A - Auxiliary tool for slinging work - Google Patents

Abstract

PURPOSE: To provide a wire gripper for performing slinging work without touching a wire directly at the time of slinging and unslinging a suspended load in the slinging work of a crane. CONSTITUTION: A fixed hook 4 is provided at the tip of a cylindrical body 1, and a movable hook 3 opposed to the fixed hook 4 is provided at the tip of a shaft 2 piercing the inside of the body 1. A grip bar 6 provided at the rear end part of the shaft 2 is slidable along the side face of an annular handle 5. Since the shaft 2 is lightly pushed out to the tip side by a spring 7, a wire can be gripped between the fixed hook 4 and the movable hook 3 by gripping the annular handle 5 and the grip bar 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary tool which can be used for sling work without directly touching the wire rope when slinging a crane.

[0002]

2. Description of the Related Art When moving a suspended load with a crane, it is common to hang the wire rope hung on the hook of the crane and hang it up. Or a rod-shaped hook, or
As shown in FIG. 5, the slinging work was performed using an auxiliary tool having a hook symmetrically provided on the hook.

[0003]

However, the manual method according to the conventional method is suitable for slinging a suspended load having a complicated shape, but there is a safety problem and there is a risk that the hand will be caught. There is. If you use a rod-shaped hook or an auxiliary tool as shown in Fig. 5, the safety problem will be solved, but you will not be able to carry out detailed work and you will rely on human hands unintentionally, and the worker's hands will be dirty and unsanitary. Not only is it dangerous.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a cylindrical main body 1 having a fixed hook 4 protruding in a substantially vertical direction at its tip and an annular handle 5 formed at its rear end. When,
A movable hook 3 facing the fixed hook 4 of the tubular body 1 and forming a wire rope gripping portion is formed at the front end, and has a shaft 2 provided with a grip bar 6 at the rear end.
Is engaged with a spring 7 built in the tubular body 1,
The gripping force applied to the grip bar 6 slides backward together with the grip bar 6 against the elastic force of the spring 7, and when the gripping force is released, the elastic force of the spring 7 causes the slide motion of the grip bar 6 to return to the original position. The fixed hook 4 which is inserted into the tubular body 1 as much as possible and constitutes the wire rope gripping portion has a curved surface in which the surface facing the movable hook 3 is gently recessed, and the grip bar 6 is the annular handle 5. Extending in the radial direction to approach or contact the side surface of the handle 5, the grip bar 6 is moved forward and backward with the side surface as a guide surface, and the sliding motion of the shaft 2 by the grip bar 6 causes the wire rope grip portion to move. It is intended to provide an auxiliary tool for slinging a crane, characterized in that the movable hook 3 and the fixed hook 4 are opened and closed.

[0005]

According to the present invention, instead of directly gripping the wire rope W with a hand when slinging the crane, the wire rope W
To the movable gripping part a, and by gripping and tightening the annular handle 5 and the grip bar 6, the wire rope W is firmly sandwiched between the fixed gripping part b and the movable gripping part a, and the wire rope W is handled freely. be able to. Since the movable hook 3 and the shaft 2 and the grip bar 6 are integrally formed, and the same side surface of the grip bar 6 slides along the annular handle 5,
The movable hook does not swivel. Therefore, the grasped wire rope W can be handled freely as if it were held by a hand, and appropriate slinging can be performed even for a complicated load.

[0006]

EXAMPLES Examples of the present invention will be described below. FIG.
The slinging aid having the above structure was made of aluminum except the spring 7. Body 1 and shaft 2
2 is shown as an AA cross section in FIG. In FIG.
Since the shaft 2 penetrates the inside of the thick-walled tubular body 1, the movable hook 3 formed integrally with the shaft 2 may rotate, but according to the BB cross section shown in FIG. Since the same side surface of the grip bar 6 integrated with 2 slides along the side surface of the annular handle 5, the movable hook 3 on the extension line of the shaft is held without rotating.

The internal structure of the device of the present invention will be described with reference to the side view having the partial sectional view of FIG. Movable hook 3 at the tip
The shaft 2 having is attached to the cylindrical main body 1 loosely, and the wire rope can be grasped between the fixed hook 4 and the movable hook 3 by grasping the grip bar 6 as shown in the above operation. When released, the grip bar 6 is loosened to release it by the restoring force of the spring 7.

The spring 7 is inserted between the inner peripheral portion of the tubular main body 1 and the outer peripheral portion of the shaft 2, and both ends thereof have the tubular main body 1.
It is inserted between the end portion 9 on the side of the annular handle and the collar-shaped projection 8 in the middle of the shaft 2. Therefore, the gripping portion is in an open state when not in use, and when gripping the wire rope W, it can be firmly gripped by gripping the grip bag 6. At the time of opening, there is a risk that a finger may be caught between the inner portion of the grip bag 6 and the outer portion of the tubular body 1, but this fear is eliminated by providing the spacer 10 at the outer end portion of the tubular body 1.

In the embodiment of the present invention, the spring 7 is inserted between the inner peripheral portion of the tubular main body 1 and the outer peripheral portion of the shaft 2, and both ends thereof are the end portions 9 on the annular handle side of the tubular main body 1. , The gripping portions a and b are released when the wire rope W is not gripped by the compression repulsive force of the spring inserted between the collar-shaped projections 8 in the middle of the shaft 2, but the spring is fixed to the main body. It may be inserted into the hook side and the gripping portions a and b may be released by the pulling force of the spring.

Since the holder of the present invention is made of aluminum, it is very light, weighing 300 g, and is easy to handle. In a roll maintenance workplace of a rolling mill, all slinging workers carry the slinging aid of the present invention in a holder attached to their waists and carry it around. Roll maintenance of rolling mills involves a great deal of slinging work such as transporting rolling rolls polished by a roll grinder to a roll storage site, attaching / detaching the rolling rolls to / from a bearing chock, and presetting to a roll changing device of the rolling mill. In recent years, 6-high rolls have become the mainstream in rolling mills, and the number of rolls used in tandem rolling mills has become extremely large. Therefore, the number of times of slinging is inevitably large, and the conventional hook-hook type auxiliary tool is heavy and laborious for the operator. Not only was the worker's hands dirty, but the risk of a disaster was also very high. After the sling aid of the present invention was introduced into the roll maintenance workplace, it was welcomed by all the workers and was able to greatly contribute to the improvement of the 3K workplace.

[0011]

According to the present invention, it is possible to ensure the safety of slinging work and reduce labor.

[Brief description of drawings]

FIG. 1 is a side view showing a basic configuration of the present invention with a partially cutaway cross section.

FIG. 2 shows a cross section taken along the line AA of FIG.

FIG. 3 shows a BB cross section of FIG.

FIG. 4 is a perspective view showing a usage state of the product of the present invention.

FIG. 5 shows a state in which a conventional hook is used.

[Explanation of symbols]

 1: Main body 2: Shaft 3: Movable hook 4: Fixed hook 5: Annular handle 6: Grip bar 7: Spring 8: Collar-shaped protrusion 10: Spacer W: Wire rope

Claims (1)

[Claims] 1. A wire main rope having a cylindrical main body 1 having a fixed hook 4 projecting in a substantially vertical direction at a front end thereof and an annular handle 5 formed at a rear end thereof, and a fixed hook 4 of the cylindrical main body 1 facing each other. A movable hook 3 forming a grip portion is formed at the front end, and has a shaft 2 provided at the rear end with a grip bar 6, and the shaft 2 is engaged with a spring 7 incorporated in the tubular main body 1, The gripping force applied to the grip bar 6 slides backward together with the grip bar 6 against the elastic force of the spring 7, and when the gripping force is released, the elastic force of the spring 7 causes the slide motion of the grip bar 6 to return to the original position. The fixed hook 4 which is inserted into the tubular body 1 as much as possible and constitutes the wire rope gripping portion has a curved surface in which the surface facing the movable hook 3 is gently recessed, and the grip bar 6 is the annular handle 5. Handle 5 extending in the radial direction The grip bar 6 is moved back and forth with the side surface as a guide surface, and the sliding motion of the shaft 2 by the grip bar 6 opens and closes the movable hook 3 and the fixed hook 4 of the wire rope gripping portion. A tool for slinging a crane characterized by being carried out.